This is a 1.5 m long hollow cylinder apparatus, can use the elevator shuttle to hydraulic excavator through food channel.
这是一根长1.5米的空心圆柱状设备，可以利用升降机穿梭于液压挖掘机打通的给养通道。
On the base of loading properties of hollow cylinder apparatus, loading method to simulating the principal stress axes rotation in laboratory tests is given.
以此为基础，结合空心圆柱仪的加载特点，给出了室内模拟主应力轴旋转的加载方法。
On the base of loading properties of hollow cylinder apparatus, loading method to simulating the principal stress axes rotation in laboratory tests is given.
以此为基础，结合空心圆柱仪的加载特点，给出了室内模拟主应力轴旋转的加载方法。
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